Weekday from date string in C++11

I have date strings like this:

"2015-11-27"

and from them I want to determine the day of week.

This answer shows how to find the weekday of a given date using <ctime>. What is the canonical way to go about this in C++11? Should I still parse the year, month and day-of-month individually and then use those same functions from <ctime> or is there a simpler way nowadays?